Image intensifier

<p>An image intensifier or image intensifier tube is a <a href="/facts/Vacuum_tube/VHd1BNLq">vacuum tube</a> device for increasing the intensity of available light in an <a href="/facts/Optical_system/p0vq4S1T">optical system</a> to allow use under low-light conditions, such as at night, to facilitate visual imaging of low-light processes, such as fluorescence of materials in <a href="/facts/X-ray/wseP79cN">X-rays</a> or <a href="/facts/Gamma_ray/5Drf913J">gamma rays</a> (<a href="/facts/X-ray_image_intensifier/BMgSvevE">X-ray image intensifier</a>), or for conversion of non-visible light sources, such as near-<a href="/facts/Infrared/44XdJNcc">infrared</a> or short wave infrared to visible. They operate by converting photons of light into electrons, amplifying the electrons (usually with a <a href="/facts/Microchannel_plate/jfy48H2Y">microchannel plate</a>), and then converting the amplified electrons back into photons for viewing. They are used in devices such as <a href="/facts/Night-vision_device/jJ58YGa0">night-vision goggles</a>.
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Image intensifier open-in-new

Image intensifier